Wyoming Snow Precipitation Update
United States Natural Resources Water and Climate Center
Department of Conservation Portland, Oregon
Agriculture Service
S N O W - P R E C I P I T A T I O N U P D A T E
Based on Mountain Data from NRCS SNOTEL Sites
As of THURSDAY: FEBRUARY 13 , 2020
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
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WYOMING
SNAKE RIVER
Base Camp 7060 12.1 12.2 99 12.6 15.1 83
Black Bear 8170 25.0 26.7 94 23.6 26.9 88
Blind Bull Sum 8650 19.0 15.5 123 11.4 14.0 81
Cottonwood Creek 7670 21.0 14.3 147 22.1 17.3 128
East Rim Divide 7930 9.3 7.1 131 7.4 8.3 89
Grand Targhee 9260 30.5 25.7 119 21.2 22.8 93
Granite Creek 6770 11.9 11.9 100 -M 14.7 *
Grassy Lake 7265 23.8 23.2 103 23.9 26.1 92
Gros Ventre Summit 8750 8.2 8.8 93 8.0 8.8 91
Gunsight Pass 9820 9.6 9.1 105 9.6 9.8 98
Lewis Lake Divide 7850 18.3 22.6 81 21.7 25.2 86
Phillips Bench 8200 21.0 17.4 121 20.4 19.9 103
Salt River Summit 7640 11.7 8.9 131 11.9 11.6 103
Snake River Station 6920 12.6 12.7 99 14.9 16.8 89
Spring Creek Divide 9000 20.1 16.1 125 19.3 16.8 115
Thumb Divide 7980 10.6 10.3 103 10.7 13.1 82
Togwotee Pass 9580 19.3 16.1 120 18.3 17.2 106
Two Ocean Plateau 9240 21.2 19.2 110 16.3 19.1 85
Willow Creek 8080 26.6 18.7 142 26.8 23.5 114
Younts Peak 8350 12.6 10.5 120 10.4 11.4 91
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Basin Index (%) 112 96
MADISON-GALLATIN
Black Bear 8170 25.0 26.7 94 23.6 26.9 88
Canyon 7870 10.3 9.0 114 10.5 11.7 90
Madison Plateau 7750 15.6 15.4 101 11.6 18.7 62
West Yellowstone 6700 8.4 7.5 112 7.2 10.5 69
Whiskey Creek 6800 11.2 10.4 108 12.8 14.3 90
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Basin Index (%) 102 80
YELLOWSTONE
Beartooth Lake 9360 16.4 15.1 109 15.1 14.0 108
Burnt Mtn 5880 4.8 3.2 150 9.2 8.5 108
Canyon 7870 10.3 9.0 114 10.5 11.7 90
Cole Creek 7850 13.2 8.8 150 10.0 8.2 122
Evening Star 9200 19.7 17.1 115 21.6 19.7 110
Fisher Creek 9100 23.1 22.5 103 23.7 22.5 105
Northeast Entrance 7350 8.2 7.2 114 9.3 9.0 103
Parker Peak 9400 18.9 13.9 136 17.0 12.4 137
Sylvan Lake 8420 15.3 13.7 112 17.1 16.0 107
Thumb Divide 7980 10.6 10.3 103 10.7 13.1 82
Two Ocean Plateau 9240 21.2 19.2 110 16.3 19.1 85
White Mill 8700 19.0 16.0 119 15.6 16.8 93
Wolverine 7650 10.2 7.7 132 9.9 8.9 111
Younts Peak 8350 12.6 10.5 120 10.4 11.4 91
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Basin Index (%) 117 103
WIND RIVER
Burroughs Creek 8750 8.5 -M * 9.8 -M *
Castle Creek 8400 3.8 -M * 4.4 -M *
Cold Springs 9630 5.6 4.9 114 5.2 6.6 79
Deer Park 9700 9.1 9.6 95 7.8 13.5 58
Hobbs Park 10100 9.0 8.3 108 7.6 8.3 92
Kirwin 9550 8.4 6.1 138 7.0 7.8 90
Little Warm 9370 8.1 7.0 116 6.4 8.8 73
Owl Creek 8975 4.7 3.2 147 5.0 3.8 132
South Pass 9040 8.0 9.9 81 7.1 11.8 60
St. Lawrence Alt 8620 4.0 4.4 91 5.2 5.7 91
Togwotee Pass 9580 19.3 16.1 120 18.3 17.2 106
Townsend Creek 8700 6.7 5.7 118 6.8 7.7 88
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Basin Index (%) 110 84
BIGHORN BASIN
Bald Mtn. 9380 16.5 12.3 134 12.6 11.6 109
Bear Trap Meadow 8200 -M 3.7 * 7.3 5.5 133
Bone Springs Div 9350 13.1 10.5 125 10.8 10.4 104
Grave Springs 8550 8.3 5.4 154 8.8 7.0 126
Kirwin 9550 8.4 6.1 138 7.0 7.8 90
Marquette 8760 5.3 -M * 6.5 -M *
Middle Powder 7760 9.8 6.9 142 9.9 7.9 125
Owl Creek 8975 4.7 3.2 147 5.0 3.8 132
Powder River Pass 9480 9.6 7.0 137 9.3 8.5 109
Shell Creek 9580 11.1 9.9 112 10.8 9.5 114
Timber Creek 7950 4.8 3.1 155 5.4 4.8 112
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Basin Index (%) 134 113
SHOSHONE RIVER
Blackwater 9780 15.8 15.3 103 15.8 14.3 110
Evening Star 9200 19.7 17.1 115 21.6 19.7 110
Marquette 8760 5.3 -M * 6.5 -M *
Sylvan Lake 8420 15.3 13.7 112 17.1 16.0 107
Sylvan Road 7120 9.3 8.5 109 13.0 12.7 102
Younts Peak 8350 12.6 10.5 120 10.4 11.4 91
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Basin Index (%) 112 105
POWDER RIVER
Bear Trap Meadow 8200 -M 3.7 * 7.3 5.5 133
Cloud Peak Reservoir 9860 10.1 9.3 109 9.4 8.5 111
Grave Springs 8550 8.3 5.4 154 8.8 7.0 126
Hansen Sawmill 8360 5.3 4.3 123 6.3 5.4 117
Middle Powder 7760 9.8 6.9 142 9.9 7.9 125
Powder River Pass 9480 9.6 7.0 137 9.3 8.5 109
Soldier Park 8720 3.7 -M * 6.3 -M *
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Basin Index (%) 131 119
TONGUE RIVER
Big Goose 7990 6.4 5.5 116 7.2 7.1 101
Bone Springs Div 9350 13.1 10.5 125 10.8 10.4 104
Burgess Junction 7880 8.7 7.3 119 9.7 8.1 120
Dome Lake 8880 8.9 7.6 117 7.0 9.0 78
Little Goose 8870 7.6 -M * 6.0 -M *
Sucker Creek 8880 10.6 7.7 138 9.3 9.4 99
Tie Creek 6870 6.8 3.7 184 10.3 7.6 136
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Basin Index (%) 129 105
BELLE FOURCHE
Blind Park 6890 6.0 5.5 109 6.3 8.4 75
Cole Canyon 5910 2.5 4.2 60 -M 6.5 *
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Basin Index (%) 88 75
CHEYENNE RIVER BASIN
Blind Park 6890 6.0 5.5 109 6.3 8.4 75
North Rapid Creek 6130 5.6 5.1 110 6.7 6.9 97
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Basin Index (%) 109 85
UPPER N. PLATTE
Arapaho Ridge 10960 16.4 14.4 114 16.0 15.5 103
Blackhall Mtn 9820 21.4 -M * 21.0 -M *
Columbine 9160 22.8 16.7 137 20.7 18.0 115
Divide Peak 8880 16.1 13.8 117 16.9 15.0 113
Joe Wright 10120 14.9 13.9 107 19.4 17.5 111
Laprele Creek 8375 9.0 6.2 145 9.2 8.2 112
Med Bow 10500 32.7 -M * 26.8 -M *
Never Summer 10280 14.8 13.6 109 10.8 -M *
North French Creek 10130 25.8 18.3 141 24.6 18.5 133
Old Battle 10000 23.4 21.4 109 20.8 24.6 85
Rawah 9020 9.9 7.2 138 11.4 9.7 118
Sage Creek Basin 7850 12.5 9.2 136 10.2 10.7 95
Sand Lake 10050 21.8 18.0 121 20.1 16.5 122
South Brush Creek 8440 10.5 7.9 133 10.4 10.3 101
Tower 10500 33.2 31.4 106 29.1 28.0 104
Webber Springs 9250 16.2 16.0 101 17.6 18.5 95
Whiskey Park 8950 24.9 18.2 137 24.1 19.8 122
Willow Creek Pass 9540 9.9 8.3 119 9.2 9.0 102
Zirkel 9340 21.4 20.1 106 23.7 20.7 114
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Basin Index (%) 119 109
SWEETWATER
Deer Park 9700 9.1 9.6 95 7.8 13.5 58
Larsen Creek 9000 -M 8.2 * 5.6 -M *
South Pass 9040 8.0 9.9 81 7.1 11.8 60
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Basin Index (%) 88 59
LOWER N. PLATTE
Casper Mtn. 7900 12.7 8.4 151 8.6 9.8 88
Laprele Creek 8375 9.0 6.2 145 9.2 8.2 112
Reno Hill 8400 12.3 8.4 146 12.4 9.8 127
Windy Peak 7900 7.2 4.8 150 5.9 6.9 86
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Basin Index (%) 148 104
LARAMIE RIVER
Brooklyn Lake 10240 20.0 13.3 150 19.3 14.0 138
Cinnabar Park 9574 18.2 15.0 121 19.4 17.6 110
Crow Creek 8330 6.9 6.0 115 8.6 6.9 125
Deadman Hill 10220 13.6 11.1 123 11.9 11.2 106
Rawah 9020 9.9 7.2 138 11.4 9.7 118
Roach 9700 11.1 11.1 100 10.7 12.9 83
Windy Peak 7900 7.2 4.8 150 5.9 6.9 86
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Basin Index (%) 127 110
S. PLATTE
Black Mountain 8920 8.5 -M * 10.1 -M *
Crow Creek 8330 6.9 6.0 115 8.6 6.9 125
Deadman Hill 10220 13.6 11.1 123 11.9 11.2 106
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Basin Index (%) 120 113
LITTLE SNAKE RIVER
Battle Mountain 7440 11.3 8.1 140 11.5 10.7 107
Divide Peak 8880 16.1 13.8 117 16.9 15.0 113
Elk River 8700 16.2 13.1 124 13.4 14.0 96
Little Snake River 8915 21.0 17.7 119 25.1 22.7 111
Old Battle 10000 23.4 21.4 109 20.8 24.6 85
Sage Creek Basin 7850 12.5 9.2 136 10.2 10.7 95
Sandstone RS 8150 13.1 9.4 139 12.2 13.2 92
Whiskey Park 8950 24.9 18.2 137 24.1 19.8 122
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Basin Index (%) 125 103
UPPER GREEN RIVER
Big Sandy Opening 9080 6.9 8.8 78 5.8 9.0 64
Blind Bull Sum 8650 19.0 15.5 123 11.4 14.0 81
East Rim Divide 7930 9.3 7.1 131 7.4 8.3 89
Elkhart Park G.S. 9400 8.1 8.2 99 7.6 9.2 83
Gros Ventre Summit 8750 8.2 8.8 93 8.0 8.8 91
Gunsight Pass 9820 9.6 9.1 105 9.6 9.8 98
Indian Creek 9425 17.3 16.1 107 12.4 15.4 81
Kendall R.S. 7740 7.7 8.7 89 7.6 10.1 75
Loomis Park 8240 10.9 10.4 105 13.4 12.2 110
New Fork Lake 8340 8.2 7.3 112 -M 7.6 *
Pocket Creek 9360 -M -M * 5.6 -M *
Snider Basin 8060 10.7 8.7 123 11.2 10.0 112
Spring Creek Divide 9000 20.1 16.1 125 19.3 16.8 115
Triple Peak 8500 20.3 15.1 134 20.2 17.4 116
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Basin Index (%) 112 95
LOWER GREEN RIVER
Blacks Fork Jct 8869 6.0 -M * 9.2 -M *
Buck Pasture 9632 14.0 -M * 13.6 -M *
EF Blacks Fork GS 9360 11.5 -M * 7.7 -M *
Hams Fork 7840 10.0 8.1 123 8.9 7.9 113
Hewinta 9500 8.3 6.7 124 11.1 9.5 117
Hickerson Park 9122 8.4 4.7 179 8.9 6.7 133
Hole-in-Rock 9168 8.4 4.5 187 8.5 6.2 137
Indian Creek 9425 17.3 16.1 107 12.4 15.4 81
Kelley R.S. 8180 12.0 10.0 120 12.6 12.6 100
Spirit Lk 10235 13.0 -M * 13.7 -M *
Steel Creek Park 10158 11.6 9.8 118 13.8 10.9 127
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Basin Index (%) 127 110
UPPER BEAR RIVER
Bear River RS 8777 6.8 -M * 8.1 -M *
Bug Lake 7987 15.2 12.7 120 14.0 13.5 104
Burts Miller Ranch 8000 5.2 -M * 5.4 -M *
Chalk Creek #1 9171 15.0 15.4 97 13.9 17.1 81
Hayden Fork 9130 12.3 10.1 122 15.4 14.4 107
Kelley R.S. 8180 12.0 10.0 120 12.6 12.6 100
Lily Lake 9133 8.8 8.5 104 9.2 11.7 79
Monte Cristo 8932 21.3 18.0 118 19.0 17.7 107
Salt River Summit 7640 11.7 8.9 131 11.9 11.6 103
Spring Creek Divide 9000 20.1 16.1 125 19.3 16.8 115
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Basin Index (%) 117 100
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Normal Snow Water Equivalent and
Total Precipitation values
If the Basin Index (%) value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Median represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Average value for those sites on this day.
Contact your state water supply staff for assistance.
Medians and averages are calculated for the period 1981-2010.
Provisional data, subject to revision.
* Site -- Either: (a) the current value is missing; (b) the median or
average for the day is not available or is zero; or (c) for snow water
equivalent, the median for the day is less than 10% of the maximum
median value for the year.
* Basin - More than half of the sites within the basin are flagged with *,
preventing the calculation of a meaningful basin index.
The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians (for snow water equivalent)
or averages (for precipitation) and the resulting fraction multiplied by 100.
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Normal Snow Water Equivalent and
Total Precipitation values
If the Basin Index (%) value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Median represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Average value for those sites on this day.
Contact your state water supply staff for assistance.
Medians and averages are calculated for the period 1981-2010.
Provisional data, subject to revision.
* Site -- Either: (a) the current value is missing; (b) the median or
average for the day is not available or is zero; or (c) for snow water
equivalent, the median for the day is less than 10% of the maximum
median value for the year.
* Basin - More than half of the sites within the basin are flagged with *,
preventing the calculation of a meaningful basin index.
The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians (for snow water equivalent)
or averages (for precipitation) and the resulting fraction multiplied by 100.